diff mbox series

[V5,14/20] platform/x86/intel/pmc/mtl: Use return value from pmc_core_ssram_init()

Message ID 20231123040355.82139-15-david.e.box@linux.intel.com
State New
Headers
Series intel_pmc: Add telemetry API to read counters |

Commit Message

David E. Box Nov. 23, 2023, 4:03 a.m. UTC 
  Instead of checking for a NULL regbase, use the return value from
pmc_core_ssram_init() to check if PMC discovery was successful. If not, use
the legacy enumeration method (which only works for the primary PMC).

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
---
V5 - New patch. Split from previous.

 drivers/platform/x86/intel/pmc/mtl.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Comments

Ilpo Järvinen Nov. 23, 2023, 2:26 p.m. UTC | #1 
On Wed, 22 Nov 2023, David E. Box wrote:

> Instead of checking for a NULL regbase, use the return value from
> pmc_core_ssram_init() to check if PMC discovery was successful. If not, use
> the legacy enumeration method (which only works for the primary PMC).
> 
> Signed-off-by: David E. Box <david.e.box@linux.intel.com>

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
diff mbox series

Patch

diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c
index c3b5f4fe01d1..d1d3d33fb4b8 100644
--- a/drivers/platform/x86/intel/pmc/mtl.c
+++ b/drivers/platform/x86/intel/pmc/mtl.c
@@ -990,12 +990,16 @@  int mtl_core_init(struct pmc_dev *pmcdev)
 	mtl_d3_fixup();
 
 	pmcdev->resume = mtl_resume;
-
 	pmcdev->regmap_list = mtl_pmc_info_list;
-	pmc_core_ssram_init(pmcdev);
 
-	/* If regbase not assigned, set map and discover using legacy method */
-	if (!pmc->regbase) {
+	/*
+	 * If ssram init fails use legacy method to at least get the
+	 * primary PMC
+	 */
+	ret = pmc_core_ssram_init(pmcdev);
+	if (ret) {
+		dev_warn(&pmcdev->pdev->dev,
+			 "ssram init failed, %d, using legacy init\n", ret);
 		pmc->map = &mtl_socm_reg_map;
 		ret = get_primary_reg_base(pmc);
 		if (ret)